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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>My own research on MLX support for uRPF made me very disappointed:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Note this from the release notes:<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:#1F497D'>If a default route is present on the router, loose mode will permit all traffic<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:.75in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span style='color:#1F497D'><span style='mso-list:Ignore'>-<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:#1F497D'>RPF can only be configured at the physical port level. It should not be configured on virtual interfaces on the Brocade MLX series and Brocade NetIron XMR.<o:p></o:p></span></p><p class=MsoListParagraph style='margin-left:1.25in;text-indent:-.25in;mso-list:l0 level2 lfo1'><![if !supportLists]><span style='font-family:"Courier New";color:#1F497D'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:#1F497D'>Brocade MLX series and Brocade NetIron XMR devices do not support uRPF for VE interfaces.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Also RPF is not compatible with this CAM profile: “ipv4-ipv6” I think we’re using that one.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><a href="https://tnotez.files.wordpress.com/2013/05/netironunified_05400a_configguide.pdf">https://tnotez.files.wordpress.com/2013/05/netironunified_05400a_configguide.pdf</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>Frank<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> foundry-nsp [mailto:foundry-nsp-bounces@puck.nether.net] <b>On Behalf Of </b>Michael Gehrmann<br><b>Sent:</b> Wednesday, July 13, 2016 12:11 AM<br><b>To:</b> foundry-nsp@puck.nether.net<br><b>Subject:</b> [f-nsp] MLX and uRPF for RTBH<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Hi All,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Wondering if anyone has used the uRPF feature on MLX to have the source address of traffic matched to null0 routes?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>My reading so far has lead me to a config like this:<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><pre style='line-height:12.0pt;background:whitesmoke;max-height:30em;white-space:pre-wrap;word-wrap:normal;overflow:auto'><span style='font-size:9.0pt;color:#333333'>reverse-path-check<o:p></o:p></span></pre><pre style='line-height:12.0pt;background:whitesmoke'><span style='font-size:9.0pt;color:#333333'>urpf-exclude-</span><span style='font-size:9.0pt;color:#000091'>default</span><span style='font-size:9.0pt;color:#333333'><o:p></o:p></span></pre><pre style='line-height:12.0pt;background:whitesmoke'><span style='font-size:9.0pt;color:#333333'>!<o:p></o:p></span></pre><pre style='line-height:12.0pt;background:whitesmoke'><span style='font-size:9.0pt;color:#000091'>interface</span><span style='font-size:9.0pt;color:#333333'> eth1/1<o:p></o:p></span></pre><pre style='line-height:12.0pt;background:whitesmoke'><span style='font-size:9.0pt;color:#333333'>rpf-mode loose log<o:p></o:p></span></pre><pre style='line-height:12.0pt;background:whitesmoke;max-height:30em;white-space:pre-wrap;word-wrap:normal;overflow:auto'><span style='font-size:9.0pt;color:#333333'>!<o:p></o:p></span></pre><div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Example routes look like this:<o:p></o:p></p></div><div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>device#sh ip route <a href="http://2.144.0.0/24">2.144.0.0/24</a><o:p></o:p></p></div><div><p class=MsoNormal> Destination Gateway Port Cost Type Uptime src-vrf<o:p></o:p></p></div><div><p class=MsoNormal>1 <a href="http://2.144.0.0/24">2.144.0.0/24</a> DIRECT drop 20/0 Be 3d1h - <o:p></o:p></p></div></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>My next step is the lab.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Cheers<o:p></o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><div><div><p class=MsoNormal>Michael Gehrmann<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></div></div></div></div></body></html>